const exampleTreeWith140Nodes = {
  "edges": [
    {"from": "7045321", "to": "308264215"},
    {"from": "308264215", "to": "205893853"},
    {"from": "205893853", "to": "673966248"},
    {"from": "673966248", "to": "358204164"},
    {"from": "358204164", "to": "215888392"},
    {"from": "215888392", "to": "403621992"},
    {"from": "215888392", "to": "777909510"},
    {"from": "777909510", "to": "100213815"},
    {"from": "100213815", "to": "499504374"},
    {"from": "499504374", "to": "855703404"},
    {"from": "499504374", "to": "991104907"},
    {"from": "991104907", "to": "374555325"},
    {"from": "991104907", "to": "58236163"},
    {"from": "991104907", "to": "1051662797"},
    {"from": "1051662797", "to": "523457656"},
    {"from": "1051662797", "to": "178236248"},
    {"from": "178236248", "to": "403818044"},
    {"from": "403818044", "to": "633692579"},
    {"from": "403818044", "to": "326876433"},
    {"from": "178236248", "to": "294992198"},
    {"from": "178236248", "to": "207728643"},
    {"from": "207728643", "to": "474861525"},
    {"from": "207728643", "to": "704015142"},
    {"from": "704015142", "to": "891912594"},
    {"from": "704015142", "to": "93790829"},
    {"from": "704015142", "to": "713878610"},
    {"from": "704015142", "to": "568109301"},
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    {"from": "344277619", "to": "311541390"},
    {"from": "311541390", "to": "761787449"},
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    {"from": "30973213", "to": "523457656"},
    {"from": "30973213", "to": "178236248"},
    {"from": "761787449", "to": "259733602"},
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    {"from": "344277619", "to": "1003131136"},
    {"from": "1003131136", "to": "130000569"},
    {"from": "1003131136", "to": "319536467"},
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    {"from": "299942125", "to": "178926206"},
    {"from": "299942125", "to": "675835322"},
    {"from": "299942125", "to": "1000135767"},
    {"from": "319536467", "to": "483940059"},
    {"from": "483940059", "to": "497866879"},
    {"from": "483940059", "to": "606660618"},
    {"from": "483940059", "to": "841482899"},
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    {"from": "963021319", "to": "130000569"},
    {"from": "963021319", "to": "319536467"},
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    {"from": "803634418", "to": "142291521"},
    {"from": "142291521", "to": "525361131"},
    {"from": "525361131", "to": "422007713"},
    {"from": "422007713", "to": "184596308"},
    {"from": "422007713", "to": "1020140270"},
    {"from": "422007713", "to": "779910731"},
    {"from": "525361131", "to": "859310299"},
    {"from": "859310299", "to": "514613187"},
    {"from": "514613187", "to": "680752017"},
    {"from": "680752017", "to": "1058283666"},
    {"from": "680752017", "to": "887688252"},
    {"from": "680752017", "to": "717256682"},
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    {"from": "409719617", "to": "1014464856"},
    {"from": "1014464856", "to": "773448863"},
    {"from": "773448863", "to": "988347957"},
    {"from": "773448863", "to": "152738454"},
    {"from": "773448863", "to": "338899146"},
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    {"from": "619697312", "to": "865071585"},
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    {"from": "601580192", "to": "530702767"},
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    {"from": "530702767", "to": "1014464856"},
    {"from": "139733908", "to": "530702767"},
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    {"from": "148019367", "to": "894038421"},
    {"from": "148019367", "to": "544426319"},
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    {"from": "878212306", "to": "1007715424"},
    {"from": "1007715424", "to": "258386700"},
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    {"from": "546819439", "to": "836825089"},
    {"from": "836825089", "to": "16287329"},
    {"from": "836825089", "to": "256254716"},
    {"from": "256254716", "to": "631230382"},
    {"from": "631230382", "to": "900886483"},
    {"from": "631230382", "to": "133436503"},
    {"from": "256254716", "to": "751624200"},
    {"from": "836825089", "to": "716757473"},
    {"from": "546819439", "to": "470041669"},
    {"from": "546819439", "to": "180888016"},
    {"from": "736196011", "to": "901547914"},
    {"from": "901547914", "to": "425184961"},
    {"from": "425184961", "to": "760673978"},
    {"from": "760673978", "to": "825228914"},
    {"from": "760673978", "to": "530702767"},
    {"from": "425184961", "to": "955125232"},
    {"from": "955125232", "to": "167653392"},
    {"from": "955125232", "to": "530702767"},
    {"from": "901547914", "to": "530702767"},
    {"from": "210548489", "to": "640144001"},
    {"from": "640144001", "to": "135966238"},
    {"from": "640144001", "to": "959156288"},
    {"from": "803634418", "to": "358204164"},
    {"from": "673966248", "to": "803634418"},
    {"from": "308264215", "to": "1039602752"},
    {"from": "1039602752", "to": "673966248"}
  ]
};

final exampleTrees = <Map<String, Object>>[
  {
    "edges": [
      {"from": "7045321", "to": "308264215"},
      {"from": "308264215", "to": "205893853"},
      {"from": "205893853", "to": "673966248"},
      {"from": "673966248", "to": "358204164"},
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      {"from": "215888392", "to": "403621992"},
      {"from": "215888392", "to": "777909510"},
      {"from": "777909510", "to": "100213815"},
      {"from": "100213815", "to": "499504374"},
      {"from": "499504374", "to": "855703404"},
      {"from": "499504374", "to": "991104907"},
      {"from": "991104907", "to": "374555325"},
      {"from": "991104907", "to": "58236163"},
      {"from": "991104907", "to": "1051662797"},
      {"from": "1051662797", "to": "523457656"},
      {"from": "1051662797", "to": "178236248"},
      {"from": "178236248", "to": "403818044"},
      {"from": "403818044", "to": "633692579"},
      {"from": "403818044", "to": "326876433"},
      {"from": "178236248", "to": "294992198"},
      {"from": "178236248", "to": "207728643"},
      {"from": "207728643", "to": "474861525"},
      {"from": "207728643", "to": "704015142"},
      {"from": "704015142", "to": "891912594"},
      {"from": "704015142", "to": "93790829"},
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      {"from": "704015142", "to": "568109301"},
      {"from": "100213815", "to": "298138012"},
      {"from": "298138012", "to": "1051662797"},
      {"from": "777909510", "to": "344277619"},
      {"from": "344277619", "to": "311541390"},
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      {"from": "761787449", "to": "30973213"},
      {"from": "30973213", "to": "523457656"},
      {"from": "30973213", "to": "178236248"},
      {"from": "761787449", "to": "259733602"},
      {"from": "311541390", "to": "128821445"},
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      {"from": "1003131136", "to": "130000569"},
      {"from": "1003131136", "to": "319536467"},
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      {"from": "299942125", "to": "178926206"},
      {"from": "299942125", "to": "675835322"},
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      {"from": "1039602752", "to": "673966248"}
    ]
  },
  {
    "edges": [
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